Single Crystal Perovskite/Graphene Self-Driven Photodetector with Fast Response Speed.
Materials (Basel)
; 17(11)2024 May 28.
Article
in En
| MEDLINE
| ID: mdl-38893863
ABSTRACT
Recently, the combination of two-dimensional (2D) materials and perovskites has gained increasing attention in optoelectronic applications owing to their excellent optical and electrical characteristics. Here, we report a self-driven photodetector consisting of a monolayer graphene sheet and a centimeter-sized CH3NH3PbBr3 single crystal, which was prepared using an optimized wet transfer method. The photodetector exhibits a short response time of 2/30 µs by virtue of its high-quality interface, which greatly enhances electron-hole pair separation in the heterostructure under illumination. In addition, a responsivity of ~0.9 mA/W and a detectivity over 1010 Jones are attained at zero bias. This work inspires new methods for preparing large-scale high-quality perovskite/2D material heterostructures, and provides a new direction for the future enhancement of perovskite optoelectronics.
Full text:
1
Database:
MEDLINE
Language:
En
Journal:
Materials (Basel)
Year:
2024
Type:
Article
Affiliation country:
China